Commitments and Contingencies Commitments and Contingencies (Details 3) (USD $) In Thousands, unless otherwise specified	Oct. 31, 2012
Operating Leases, Future Minimum Payments Due, Fiscal Year Maturity [Abstract]
Operating Leases, Future Minimum Payments Due, Next Twelve Months	$ 9,207
Operating Leases, Future Minimum Payments, Due in Two Years	7,704
Operating Leases, Future Minimum Payments, Due in Three Years	6,422
Operating Leases, Future Minimum Payments, Due in Four Years	4,686
Operating Leases, Future Minimum Payments, Due in Five Years	3,503
Operating Leases, Future Minimum Payments, Due Thereafter	5,919
Operating Leases, Future Minimum Payments Due	$ 37,441